EV vs Petrol Running Costs in NZ
Electric cars have moved from novelty to normal on New Zealand roads, and more used EVs are available every year. But with road user charges now applying to EVs, and power prices rising, is an EV still cheaper than a petrol car?
This guide compares EV vs petrol running costs in NZ using real numbers, looks at the other costs of ownership, and helps you decide whether an electric car suits the way you drive.
The Short Answer
An electric car is usually cheaper to run than a petrol car, especially if you charge at home on an off-peak power plan. On our example figures, an EV costs around $14.45 per 100km at the average power price, including road user charges, compared with about $24.91 for a typical petrol car.
Against an efficient hybrid, the gap is much smaller, and the EV only pulls ahead clearly when you charge cheaply. The best choice depends on whether you can charge at home, how far you drive and the price you pay to buy the car.
Running Costs Compared
| Vehicle | Cost per 100km | Cost over 15,000km |
|---|---|---|
| Petrol car (6.9 L/100km) | $24.91 | About $3,736 |
| Hybrid (4 L/100km) | $14.44 | About $2,166 |
| EV, average power price | $14.45 | About $2,167 |
| EV, off-peak home charging | $10.91 | About $1,637 |
Petrol at $3.61 a litre for 91 (national average, mid October 2026), fuel tax included. EV figures use 15.7 kWh/100km plus 11% charging losses (Gen Less assumptions), the national average residential price of 39.3c/kWh (MBIE, February 2026) or an off-peak rate of 19c/kWh, and road user charges of $76 per 1,000km. Your own costs will depend on your car, your power plan and how you drive.
What Makes the Difference
Where You Charge
Home charging is far cheaper than public fast chargers, and off-peak plans cut costs further.
Road User Charges
EVs pay $76 per 1,000km in road user charges, while petrol cars pay fuel tax at the pump.
Rego
EVs and diesels pay a higher annual licence than petrol cars because of the ACC levy.
Servicing
With far fewer moving parts, EVs usually need less maintenance than a petrol car.
Battery Health
A used EV's range depends on how much its battery has degraded over time.
Purchase Price
Compare what you pay to buy the car, not just the running costs, as this can change the overall picture.
Why Charging at Home Matters
How much an EV costs to run depends heavily on the price you pay for power. Charging at home overnight, especially on an off-peak plan, keeps costs low. Relying on public fast chargers costs much more per kilometre and can make an EV as expensive to run as a petrol car.
Gen Less estimates that charging at a public fast charger costs about the same per kilometre as running a petrol car, while charging at home off-peak costs a little over half as much. If you cannot charge at home, a hybrid may suit you better.
Buying a Used EV
Used EVs can be great value, but they need different checks from a petrol car:
- Battery health: ask for a battery health report, as it tells you how much range the car has left.
- Real-world range: make sure the range comfortably covers your daily driving, with a margin for winter and motorway speeds.
- Charging equipment: check the charging cable is included and suits how you plan to charge.
- Charging connector: check which plug the car uses, as this affects which public chargers you can use.
- History: as with any car, check the service and ownership history. Our guide on how to check a car's history explains how.
EV, Hybrid or Petrol in Three Steps
Check Your Charging
Can you charge at home or work? This is the biggest factor.
Know Your Distance
Compare your daily and longest regular trips with the car's range.
Add Up the Costs
Compare purchase price, energy, road user charges and rego.
Not Sure Which Way to Go?
Our guide to hybrid vs plug-in hybrid vs electric explains how each type works, and our guide on whether a hybrid is worth it compares hybrid and petrol running costs in detail.
At 4Guys Autobarn in Hamilton we stock a wide range of fuel-efficient hybrids and petrol cars, and we are happy to talk through what suits your driving. Visit us at 20 Arthur Porter Drive in Hamilton, open seven days, or start online: browse our current stock and apply for finance. Not local? We offer delivery anywhere in New Zealand.
Frequently Asked Questions
- Usually, yes. On our example figures, an EV costs around $14.45 per 100km at the average home power price, including road user charges, compared with about $24.91 for a petrol car using 6.9 L/100km. Charging off-peak brings the EV cost down to around $10.91.
- It depends on your power price. At the average residential rate, our example EV costs about the same per kilometre as a hybrid using 4 L/100km once road user charges are included. On a cheap off-peak rate, the EV is noticeably cheaper.
- Yes. Light electric vehicles have paid road user charges since 1 April 2024. The current rate is $76 per 1,000km, the same as a light diesel.
- Yes. Electric and diesel vehicles pay a higher annual licence than petrol cars because of the ACC levy, which is part of your rego.
- Generally, yes. An electric motor has far fewer moving parts than a petrol engine, with no oil changes, spark plugs or timing belts. You still need tyres, brakes, a WoF and regular checks.
- The most important thing is battery health, which affects the driving range. Ask for a battery health report, check the real-world range suits your driving, and make sure the charging cable and equipment are included.
- It varies widely. Older, smaller-battery EVs may manage around 100km, while newer models often do 200 to 300km or more. A used EV's range also depends on how much its battery has degraded.
- An EV suits you best if you can charge at home and your daily driving fits comfortably within its range. If you cannot charge at home or often drive long distances, a hybrid may be the better choice.
